PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-19:58:10
G02     260.3          78.8                9.0 +/-    0.38       9.1 +/-    0.38  0.030 / 0.040
G05     169.4          21.4               14.2 +/-    1.73      30.2 +/-    1.73  0.030 / 0.040
G06     40.2           51.0                9.6 +/-    0.60      11.9 +/-    0.60  0.110 / 0.230
G12     321.6          60.9                7.4 +/-    0.99       8.3 +/-    0.99  0.120 / 0.180
G17     75.4           19.4                8.2 +/-    1.14      18.2 +/-    1.14  0.070 / 0.140
G19     60.9           37.3                8.0 +/-    1.48      12.2 +/-    1.48  0.100 / 0.130
G24     238.2          31.2               10.0 +/-    1.66      17.0 +/-    1.66  0.040 / 0.040
G25     317.4          17.3                8.0 +/-    1.78      18.8 +/-    1.78  0.040 / 0.040